#### Answer

$(-\infty, -2)$

#### Work Step by Step

Based on the given graph, the function $f$ is increasing on the interval $(-\infty, -2)$.

Published by
Pearson

ISBN 10:
0-13446-914-3

ISBN 13:
978-0-13446-914-0

$(-\infty, -2)$

Based on the given graph, the function $f$ is increasing on the interval $(-\infty, -2)$.

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